End connection for dynamo-electric machines.



No. 808,241. PATENTED DEC. 26, 1905. I P. H. JBANNIN, I

END CONNECTION FOR DYNAMO ELECTRIC MACHINES.

APPLICATION FILED MAY25.1904.

Witnessesinventor:

( ram K Na Jechmm.

b y E1552- zwm J S Ct 9 a UNITED STATES PATENT OFFICE.

FRANK H. JEANNIN, OF SCHENEOTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRICCOMPANY, A. CORPORATION'OF NEWV YORK.

END CONNECTION FOR DYNAMO-ELECTRIC MACHINES.

Specification of Letters Patent.

Patented Dec. 26, 1905.

Application filed May 25, 1904. Serial No. 209,666.

T0 at whom i2; may concern.-

Be it known that I, FRANK H. J EANNIN, a citizen of the United States,residing at Schenectady, county of Schenectady, State of New York, haveinvented certain new and useful Improvements in End Connections forDynamo-Electric Machines, of which the following is a specification.

My invention relates to dynamo-electric machines; and its object is toprovide anovel form of end connection for large and closelyspacedconductors which shall facilitate the construction of machines employingsuch conductors. In many types of machines such, for example, as in thestator of a lowvoltage alternating-current motor of large capacity-thewinding is commonlyformed of heavybars which are placed inclosely-spaced slots. The size of the bars renders it im practicable toemploy former-wound coils, and consequently it is necessary to join theseparate conductors by suitable end connections. Since the currentcapacity is high, the end connections must make good electrical contactwith the conductors, and it has been found that the most satisfactoryconstruction consists in riveting the end connections to the conductorsand then soldering. When the conductors are closely spaced, as isfrequently the case, it is impossible to insert the rivets when theconductors are in position, and this involves drawing out eachconductor, so that it extends beyond the adjacent conductors in orderthat the rivet may be passed through it.

My invention consists in slotting out the ends of the conductors, so asto enable the rivets to be formed in the end connections beforeassembling and then slipped into place without disturbing the positionof the conductor.

My invention will best 'be understood by reference to the accompanyingdrawings, in which" Figure 1 shows an end view of a portion of thestator of a dynamo-electric machine with end connections arranged inaccordance with my invention. Fig. 2 shows an enlarged detail view of asingle conductor and end connection, and Fig. 3 shows a side view of thesame.

In Fig. 1, AA represent conductors formed of heavy bars and inserted inholes or slots in the member B.

C Crepresent the end connections which are secured to the conductors Aby the rivets D. Each end connection consists of two parallelconducting-strips which are riveted to opposite sides of the conductor,thereby utilizing the contact-surface of both sides. In order to enablethe rivets to be slipped into place without drawing out the conductor,the end of each conductor is slotted, as shown in dotted lines in Fig.3. rivets may be formed in the end connection before assembling and thenslipped into place in the ends of the conductors. The rivets may then betightened by means of a clamping-tool and the connection soldered tofurther improve the electrical contact.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. In a dynamo-electric machine, conductors slotted at their ends,rivets adapted to enter said slots, and end connections for saidconductors engaged by said rivets.

2. In a dynamo-electric machine, conductors slotted at their ends, andend connections for said conductors provided with rivets adapted toenter said slots and secured to said conductors by said rivets.

3. In a dynamo-electric machine, conductors, and end connections rivetedthereto, said conductors being slotted at their ends to receive therivets.

4. In a dynamo-electric machine, conductors, and end connections eachformed of parallel conducting-strips riveted to opposite sides of aconductor, said conductors being slotted at their ends to receive therivets.

5. In a dynamo-electric machine, a core having closely-spaced slots,conductors in said slots, and end connections riveted to saidconductors, said conductors being slotted at their ends to receive therivets.

6. In a dynamo-electric machine, a core having closely-spaced slots,conductors carried in said slots, and end connections each formed ofparallel conducting-strips riveted to opposite sides of a conductor,said conductors being slotted at their ends to receive the rivets.

In witness whereof I have hereunto set my hand this 24th day of May,1904.

FRANK I-I. JEANNIN.

Witnesses G. C. HoLLIsTER, HELEN ORFORD.

By means of this construction the

